Constructing a stability index for software using probability ratio sequential testing

In this paper, the results of software testing during development is considered. Progress toward completion may be measured in part by developing and tracking a stability index for the product under development. We propose that a stability index can be constructed based on probability ratio sequential testing. These indices can be manipulated to understand sensitivity to various customer profiles. A stability index constructed is useful for determining sensitivity to variable customer profiles, balancing the mix of categories of test cases, and optimizing total duration of stability testing.